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Task.ts
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125 lines (111 loc) · 3.08 KB
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import { randomBytes } from 'crypto'
import type { AppState } from './state/AppState.js'
import type { AgentId } from './types/ids.js'
import { getTaskOutputPath } from './utils/task/diskOutput.js'
export type TaskType =
| 'local_bash'
| 'local_agent'
| 'remote_agent'
| 'in_process_teammate'
| 'local_workflow'
| 'monitor_mcp'
| 'dream'
export type TaskStatus =
| 'pending'
| 'running'
| 'completed'
| 'failed'
| 'killed'
/**
* True when a task is in a terminal state and will not transition further.
* Used to guard against injecting messages into dead teammates, evicting
* finished tasks from AppState, and orphan-cleanup paths.
*/
export function isTerminalTaskStatus(status: TaskStatus): boolean {
return status === 'completed' || status === 'failed' || status === 'killed'
}
export type TaskHandle = {
taskId: string
cleanup?: () => void
}
export type SetAppState = (f: (prev: AppState) => AppState) => void
export type TaskContext = {
abortController: AbortController
getAppState: () => AppState
setAppState: SetAppState
}
// Base fields shared by all task states
export type TaskStateBase = {
id: string
type: TaskType
status: TaskStatus
description: string
toolUseId?: string
startTime: number
endTime?: number
totalPausedMs?: number
outputFile: string
outputOffset: number
notified: boolean
}
export type LocalShellSpawnInput = {
command: string
description: string
timeout?: number
toolUseId?: string
agentId?: AgentId
/** UI display variant: description-as-label, dialog title, status bar pill. */
kind?: 'bash' | 'monitor'
}
// What getTaskByType dispatches for: kill. spawn/render were never
// called polymorphically (removed in #22546). All six kill implementations
// use only setAppState — getAppState/abortController were dead weight.
export type Task = {
name: string
type: TaskType
kill(taskId: string, setAppState: SetAppState): Promise<void>
}
// Task ID prefixes
const TASK_ID_PREFIXES: Record<string, string> = {
local_bash: 'b', // Keep as 'b' for backward compatibility
local_agent: 'a',
remote_agent: 'r',
in_process_teammate: 't',
local_workflow: 'w',
monitor_mcp: 'm',
dream: 'd',
}
// Get task ID prefix
function getTaskIdPrefix(type: TaskType): string {
return TASK_ID_PREFIXES[type] ?? 'x'
}
// Case-insensitive-safe alphabet (digits + lowercase) for task IDs.
// 36^8 ≈ 2.8 trillion combinations, sufficient to resist brute-force symlink attacks.
const TASK_ID_ALPHABET = '0123456789abcdefghijklmnopqrstuvwxyz'
export function generateTaskId(type: TaskType): string {
const prefix = getTaskIdPrefix(type)
const bytes = randomBytes(8)
let id = prefix
for (let i = 0; i < 8; i++) {
id += TASK_ID_ALPHABET[bytes[i]! % TASK_ID_ALPHABET.length]
}
return id
}
export function createTaskStateBase(
id: string,
type: TaskType,
description: string,
toolUseId?: string,
): TaskStateBase {
return {
id,
type,
status: 'pending',
description,
toolUseId,
startTime: Date.now(),
outputFile: getTaskOutputPath(id),
outputOffset: 0,
notified: false,
}
}